The Soler and Palau MFL-355 G4 is a duct mounted filter box engineered to improve air quality in ventilation systems. Featuring a 355mm size and G4 grade filter, it effectively captures dust, debris, and other airborne particles, protecting downstream equipment and ensuring clean airflow. Its robust design allows easy integration into residential, commercial, or light industrial ducted systems. The MFL-355 G4 provides reliable filtration performance, helping to maintain healthy indoor air and enhance the efficiency and longevity of ventilation equipment.